April weather forecastOld Mill Creek, IL
April
Weather in April
April in Old Mill Creek, Illinois, is a cool spring month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 50.7°F (10.4°C).Temperature
With the onset of April, Old Mill Creek sees a temperature rise, with the average high-temperature moving from March's cold 41.2°F (5.1°C) to a cool 50.7°F (10.4°C). April's average low-temperature reading settles at an icy 38.8°F (3.8°C).Humidity
In Old Mill Creek, Illinois, the average relative humidity in April is 77%.Rainfall
In Old Mill Creek, in April, during 14.3 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Old Mill Creek. During 2.4 snowfall days, in April, Old Mill Creek aggregates 0.98" (25mm) of snow. In Old Mill Creek, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.Daylight
The average length of the day in April is 13h and 24min.On the first day of April in Old Mill Creek, sunrise is at 6:32 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:50 pm CDT.
Sunshine
In April, the average sunshine in Old Mill Creek is 7.8h.UV index
The average daily maximum UV index in April in Old Mill Creek is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Old Mill Creek, IL
- Average high temperature in April: 50.7°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in April
Old Mill Creek, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Old Mill Creek, IL
- Average wind speed in April: 10.9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in April
Old Mill Creek, IL
- Average humidity in April: 77%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in April
Old Mill Creek, IL
- Average rainfall in April: 2.44"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in April
Old Mill Creek, IL
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in April
Old Mill Creek, IL
- Average snowfall in April: 0.98"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Old Mill Creek, IL
- Average snowfall days in April: 2.4 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Old Mill Creek, IL
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Old Mill Creek, IL
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in April
Old Mill Creek, IL
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Old Mill Creek, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Old Mill Creek, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
